Hello and welcome back to DoctorSpring.com.

Presently PET/CT scan is the gold standard for malignancies generally.

Investigations have to be always correlated with the clinical conditions and other parameters. Physicians have to correlate everything with the presenting condition, clinico-radiologic and pathology investigations.

Internet gives you a whole lot of general, non-specific and sometimes inaccurate information causing unnecessary anxiety. 

Specifically answering your query, PET scan is done along with CT scan and images are correlated with overlapping the images. So if there was lobular cancer, it would have shown up on CT at least.

Hope your concern is addressed.

Let me know if you have any other query.

Kind regards.

Hello.

 
Usually NO grossly aggressive behavior of the tumor happens during the period off medications.
 
 
 
 
The ER positive tumors generally have an indolent behavior and grow very slowly. Moreover, chemotherapy might have already acted on these microscopic disease, if we assume that it was present. Hence there is no need to be concerned about the duration in which you go through surgery and radiation.
Tumors don't grow within 4 months. Lobular cancers with ER positivity are slow growing tumors. AI can handle even if the tumor is large until the hormone status is positive.
 
 
 
 
May be, you can start with AI during RT ! No harm ! No gain ! 
 
 
 
 
But please consult with your oncologist.
 
 
 
 
Kind regards.